Home / 3,891.20-5,368.48-2,494.72

Finding the Fourth Proportional to 3,891.20, 5,368.48 and 2,494.72

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Solution

The fourth proportional to 3,891.20, 5,368.48 and 2,494.72 is: 3,441.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.20 : 5,368.48 = 2,494.72 : x
  2. Step 2: Convert to fraction form
    3,891.20/5,368.48 = 2,494.72/x
  3. Step 3: Cross multiply
    3,891.20x = 5,368.48 × 2,494.72
  4. Step 4: Simplify right side
    3,891.20x = 13,392,854.43
  5. Step 5: Solve for x
    x = 13,392,854.43/3,891.20
  6. Step 6: Final answer
    x = 3,441.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.